This circuit was obtained in an American documentation from the 90's. The circuit can be implemented with some equivalent components, such as transistors and TTL logic circuits.
Found in a documentation from the 90s, this circuit limits and amplifies a voice signal in the 800...
This is a special circuit with very interesting effects, which can be added to electronic games,...
This PA or Public Address amplifier with a few watts of power was found in the March 1986 Radio...